Data Collection and Analysis
Data for each included study including publication and methodological
details: journal name and impact factor (from Clarivate Analytics), year
of publication, country of the corresponding author, source of funding
(e.g. government, philanthropic, industry, etc.), conflict of interest
statement (dichotomous), citation rate (number of Google Scholar
citations) and type of intervention studied (e.g. prostaglandins,
oxytocin, misoprostol, etc.) were independently extracted by two authors
(N.W. and M.M.) (Table S1 Pg 1-3). Discrepancies were resolved by
discussion and consensus among the authorship team. The list of excluded
studies can be found in the online supplement (Table S2 Pg. 4).